Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
trung cap » trung tam
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chiet tach)) - thanh ((trung cap) OR (truong cao)) nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chiet tach)) - thanh ((trung cap) OR (truong cao)) nhung cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chiet tach)) - thanh ((trung cap) OR (truong cao)) nhung cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chiet tach)) - thanh ((trung cap) OR (truong cao)) nhung cong tac toan tap*.